I think it will still be challenging to make the economics work, policies that assumed growth will need to change (such as assumptions around affording welfate programs). Otherwise I agree, there probably should be an equilibrium point to float around that they can aim for.
>>ehnto+(OP)
Right, it's the first point brought up every time in rebuttal. But, when have we not had to make adjustments to policy when circumstances change?
The argument against a sustainable population basically boils down to, "but, then we'd have to make adjustments to policy!" Which is not the slam-dunk some seem to think it is.